CN104251844A - Multi-channel seawater transparency measuring device and method - Google Patents
Multi-channel seawater transparency measuring device and method Download PDFInfo
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- CN104251844A CN104251844A CN201410481634.3A CN201410481634A CN104251844A CN 104251844 A CN104251844 A CN 104251844A CN 201410481634 A CN201410481634 A CN 201410481634A CN 104251844 A CN104251844 A CN 104251844A
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Abstract
The invention provides a multi-channel seawater transparency measuring device which comprises a sealed transparency measuring disk, an optical measuring device and an optical communication device, wherein the optical measuring device is embedded in the center of the transparency measuring disk, and the measuring plane of the optical measuring device is positioned on the front surface of the transparency measuring disk; the optical measuring device comprises an upper shell and a lower shell which are in hollow connection with each other, and protective glass is arranged in the hollow parts of the two shells; one side of the protective glass is in contact with the upper shell through a rubber isolation ring, and the other side of the protective glass is in contact with a plurality of optical filters with different wave bands through rubber isolation rings; a photodiode penetrating through the lower shell is arranged at the bottom of each optical filter to form a channel, and the multiple optical filters with different wave bands and the corresponding photodiodes form a plurality of different channels. By adopting a multi-channel and narrow-band measurement mode, the multi-channel seawater transparency measuring device can obtain radiation count values of different channels in different depths of seawater and further obtains the seawater transparency and extinction coefficient profiles of different channels.
Description
Technical field
The present invention is a kind of based on optical principle measurement seawater transparency measurement mechanism and method thereof, is mainly used in hydrospace detection field.
Background technology
Seawater transparency refers to the muddy degree of seawater, reflection be the Extinction Characteristic of seawater, being ocean basic optical parameter, is one of substance of seawater optical characteristic measurement in current oceanographic survey work.The Concentration of seawater transparency is the important factor affecting the operating distances such as underwater communication, underwater optics imaging, underwater laser detection and effect.Carry out under water latent communication, submarine disappearance and antisubmarine, submarine mine are laid all need in real time with the military activity such as detectings a mine, sea bed mapping, seawater transparency profile data accurately, in real time, accurately, enrich, the seawater transparency data of long term accumulation is significant to improving naval hydrological support ability.
Current seawater transparency measuring method has font method, cross method, Sai Shi dish method, and the mode mainly through the muddy degree of artificial observation seawater is carried out, and wherein, Sai Shi dish method is a kind of on-the-spot seawater transparency measuring method the most conventional.By diameter be 30cm white disk (transparent scale, also claim plug gram transparency measuring dish) vertically put into water, until just cannot see.The degree of depth of transparent scale " disappearance " is transparency.Although Sai Shi dish method is easy, directly perceived, measurement result affects by polyfactorial, as: the performance of (1) observer; (2) observation person's subjectivity; (3) observation site illumination condition; (4) transparency measuring dish is color aging; (5) measure rope to tilt.
Mainly concentrate on external at present in seawater transparency Research on measuring technique, as: hydrology optical bio instrument company of the U.S. (Hydro-Optics), WET Labs company of the U.S., marine optics instrument company of the U.S. (Ocean-Optic), German TriOS company etc., relevant device and method have: Hydro-Optics company of U.S. c-β eta optical attenuation measuring instrument, a-Sphere integration ball light absorption meter, HydroRad EO-1 hyperion Underwater Optical spectrometer; U.S. WET Labs company AC-S Water Inherent Optical Properties measuring instrument; Ocean-Optics company of U.S. ring concave grating seawater measuring instrument; The single channel seawater transparency instrument etc. of domestic development.This quasi-instrument all adopts the power supply mode of built-in light source and built-in power, and instrument system is complicated, expensive.
Summary of the invention
For prior art Problems existing, the invention provides a kind of hyperchannel seawater transparency measurement mechanism and method thereof, adopt hyperchannel, narrow wave band metering system, the radiometer numerical value of multiple different passage at seawater different depth can be obtained, and then obtain seawater transparency and the extinction coefficient profile of different passage, observation data can be corresponding with satellite remote sensing high resolution channel, and being suitably for large area accurate remote sensing seawater transparency information provides and correct data; Adopt built-in capacitance charging mode and optical communication mode, price is low, simple, practical, contains much information.
Technical scheme of the present invention is: a kind of hyperchannel seawater transparency measurement mechanism, comprises the transparency measuring dish of sealing, optical measuring device and optical communication apparatus;
Described optical measuring device is embedded at the center of transparency measuring dish, measuring surface is positioned at transparency measuring dish front, and the communication of offering optical measuring device in transparency measuring tray bottom communications face connects hole;
Described optical communication apparatus inside is provided with communication board, and communication board is fixed by communication board set casing, communication board set casing is provided with and connects the supporting communication joint in hole with communicating; Communication joint directly inserts in communication interface, realizes optical communication;
Described transparency measuring dish inside arranges pressure transducer and charging capacitor, side arrange charging ring just, negative, the charging ring ground of charging ring;
Described optical measuring device comprises upper shell and the lower house of hollow connection; cover glass is arranged at two housings hollow part; side is contacted with upper shell by rubber cage ring, side is contacted with the optical filter of several different-wavebands by rubber cage ring; a photodiode through lower house is all set bottom each optical filter; form a passage, optical filter and the corresponding photodiode of several different-wavebands form several different passages.
Further, be fixedly connected with by tightening screw between described upper shell and lower house.
Further, the number of described optical filter is 3-6.
Further, described transparency measuring dish front is that white is circular.
The present invention also provides a kind of hyperchannel seawater transparency measuring method, and concrete steps are as follows:
(1) with a fixing hyperchannel seawater transparency measurement mechanism of band graduated measurement rope, put into seawater by the measuring surface of optical measuring device upward, slowly sink;
(2) in sinking watching, utilize pressure transducer repeatedly to trigger optical measuring device and measure seawater transparency; Measuring method is as follows: utilize sun utilizing emitted light, be radiated in measuring surface by light path, and after being processed by cover glass and the optical filter optical filtering of several different-wavebands, directly exported the count value of radiant quantity corresponding to several different passages by silicon photoelectric diode, and count value is stored in communication board inside;
(3) when hyperchannel seawater transparency measurement mechanism sinks to measurement rope bosom, measurement mechanism is pulled out the water surface, utilizes optical communication apparatus, derive count value, according to the corresponding relation of count value and radiation value, obtain the radiation value of several different passages of the same degree of depth; By repeatedly triggering measurement, obtain the variation relation of several different passages at the radiation value of different depth, thus obtain the hyperchannel extinction coefficient profile of seawater.
Further, the measuring surface of described optical measuring device, puts into seawater down, slowly sinks, and repeats step (2), (3), obtains the hyperchannel backscattering coefficient profile of seawater.
Further, the described length measuring rope is 45-55m.
Further, in step (2), in sinking watching, often sink 0.1m, utilizes pressure transducer to trigger optical measuring device and measure a seawater transparency.
The invention has the beneficial effects as follows:
(1) adopt hyperchannel, narrow wave band metering system, the radiometer numerical value of multiple different passage at seawater different depth can be obtained, and then obtain seawater transparency and the extinction coefficient profile of different passage; Observation passage can be arranged according to demand, requires to select corresponding optical filter module to obtain the radiometer numerical value of this arrowband according to channel bandwidth; Usually can select to measure from ultraviolet, visible ray to the multiple passages in near-infrared band, optical filter bandwidth is generally less than 10nm.
(2) adopt built-in capacitance charging mode, avoid battery loss and life problems, battery life can reach endless in theory; Can charge to electric capacity in transparency measuring dish outside, without the need to connecting electric power connection line; The capacitance size selected is suitable, can ensure that surveying work continues more than 30min, guarantee once complete measuring process.
(3) control (starting measurement, statistical conversion) of optical measuring device is all rely on terminal computer to connect communication board by DB9 serial port line, send instructions to optical communication apparatus by communication board, adopt optical communication mode between optical communication apparatus and communication board, avoid telecommunication cable and connect.
(4) built-in capacitance charging mode and optical communication mode, avoids in repeated measurement process and needs frequently to open measurement mechanism, avoids the sealing that feed cable and telecommunication cable place may cause and leaks and maintenance problems.Measurement mechanism once manufactured and carry out sealing, after waterproof test, without the need to again opening in the use in future.
(5) transparency measuring dish inside arranges silicon piezoresistive pressure sensor, according to pressure change, automatically triggers optical measuring device and measures.
(6) this device possesses multiple use-pattern, contains much information.Transparency measuring dish frontal design is transparent scale size, shape, solid colour with artificial observation, and the transparent scale that can be used as artificial visually examine's seawater transparency in measuring process uses.
(7) this device is using sunshine as light source, avoids the system complex problem that built-in secondary color light source may cause, can disposable synchro measure multiple passage water body extinction coefficient and backscattering coefficient profile.Require to observe by day, in one-shot measurement process, require that solar radiation variations is little, due to one-shot measurement process shorter (in 10min), this condition easily meets.Owing to have employed sunshine as light source, cause the degree of depth of this device measuring comparatively dark, usually can reach more than 60m, exceed the depth capacity of artificial visually examine's seawater transparency.
Accompanying drawing explanation
Fig. 1 is the structural representation in the optical measurement face of hyperchannel seawater transparency measurement mechanism;
Fig. 2 is the structural representation of the communications face of hyperchannel seawater transparency measurement mechanism;
Fig. 3 is the structural representation of optical communication apparatus;
Fig. 4 is the structural representation of optical measuring device;
Fig. 5 is the optical measurement face instrumentation plan up and down of hyperchannel seawater transparency measurement mechanism.
In figure: 1 is silicon photoelectric diode, 2 is lower house, and 3 is optical filter, and 4 is rubber cage ring; 5 is cover glass, and 6 is tightening screw, and 7 is upper shell; 8 is measuring surface, and 9 is transparency measuring dish, 10 be charging ring just; 11 bear for charging ring, and 12 be charging ring, and 13 connect hole for communication; 14 is silicon piezoresistive pressure sensor, and 15 is communications face, and 16 is communication joint; 17 communication board set casings, 18 is the sun, and 19 is light path.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, 2, a kind of hyperchannel seawater transparency measurement mechanism, comprises the transparency measuring dish 9 of sealing, optical measuring device and optical communication apparatus.Described optical measuring device is embedded at the center of transparency measuring dish, measuring surface 8 is positioned at transparency measuring dish front, and the communication of offering optical measuring device in transparency measuring tray bottom communications face 15 connects hole 13.As shown in Figure 3, described optical communication apparatus inside is provided with communication board, and communication board is fixed by communication board set casing 17, communication board set casing 17 is provided with and connects the supporting communication joint in hole 13 16 with communicating.Communication joint directly inserts in communication interface, realize optical communication, the control (starting measurement, statistical conversion) of optical measuring device is all rely on terminal computer to connect communication board by DB9 serial port line, send instructions to optical communication apparatus by communication board, adopt optical communication mode between optical communication apparatus and communication board, avoid telecommunication cable and connect.
Transparency measuring dish 9 inside arranges charging capacitor, side arranges that charging ring is positive 10, charging ring is negative 11, charging ring ground 12, and adopt built-in capacitance charging mode, avoid battery loss and life problems, battery life can reach endless in theory; Can charge to electric capacity in transparency measuring dish outside, without the need to connecting electric power connection line; The capacitance size selected is suitable, can ensure that surveying work continues more than 30min, guarantee once complete measuring process.Optical measuring device and optical communication apparatus all adopt charging capacitor to power.
Built-in capacitance charging mode and optical communication mode, avoid in repeated measurement process and need frequently to open measurement mechanism, avoids the sealing that feed cable and telecommunication cable place may cause and leak and maintenance problems.Measurement mechanism once manufactured and carry out sealing, after waterproof test, without the need to again opening in the use in future.
Transparency measuring dish 9 inside arranges silicon piezoresistive pressure sensor 14, according to pressure change, automatically triggers optical measuring device and measures.
As shown in Figure 4, described optical measuring device comprises upper shell 7 and the lower house 2 of hollow, be fixedly connected with by tightening screw 6 between upper shell 7 and lower house 2, cover glass 5 is arranged at two housings hollow part, and both sides all arrange rubber cage ring 4 up and down, side is contacted with upper shell 7 by rubber cage ring 4, side is contacted with the optical filter 3 of 4 different-wavebands by rubber cage ring 4, a silicon photoelectric diode 1 through lower house is all set bottom each optical filter 3, form a passage, optical filter and the corresponding silicon photoelectric diode of 4 different-wavebands then form 4 different passages.And the present invention adopts optical filter to be narrow band pass filter, adopt hyperchannel, narrow wave band metering system, the radiometer numerical value of multiple different passage at seawater different depth can be obtained, and then obtain seawater transparency and the extinction coefficient profile of different passage; Observation passage can be arranged according to demand, requires to select corresponding optical filter module to obtain the radiometer numerical value of this arrowband according to channel bandwidth; Usually can select to measure from ultraviolet, visible ray to the multiple passages in near-infrared band, optical filter bandwidth is generally less than 10nm.
As shown in Figure 5, measuring method is as follows: fix hyperchannel seawater transparency measurement mechanism with the measurement rope of the graduated 50m length of band, put into seawater by the measuring surface of optical measuring device upward, slowly sink; In sinking watching, often sink 0.1m, utilizes silicon piezoresistive pressure sensor-triggered optical measuring device to measure a seawater transparency.Measuring method is as follows: utilize sun utilizing emitted light, be radiated in measuring surface by light path, and after being processed by cover glass and the optical filter optical filtering of several different-wavebands, directly exported the count value of radiant quantity corresponding to several different passages by silicon photoelectric diode, and count value is stored in communication board inside; When hyperchannel seawater transparency measurement mechanism sink to measure rope bosom time, measurement mechanism is pulled out the water surface, utilizes optical communication apparatus, derive count value, according to the corresponding relation of count value and radiation value, obtain the radiation value of several different passages of the same degree of depth; By repeatedly triggering measurement, obtain the variation relation of several different passages at the radiation value of different depth, thus obtain the hyperchannel extinction coefficient profile of seawater.And then, put into seawater by the measuring surface of optical measuring device down, slowly sink, repeat above-mentioned steps, obtain the hyperchannel backscattering coefficient profile of seawater.
Wherein, hyperchannel seawater transparency measurement mechanism often sinks 0.1m, pressure transducer triggers optical measuring device and measures a seawater transparency, principle is as follows: density of sea water × acceleration of gravity × degree of depth, be pressure, the density of seawater and acceleration of gravity are known, then pressure and the degree of depth are certain proportionate relationship, the degree of depth can be obtained by the graduated measurement rope of band, then pressure can calculate.Meanwhile, pressure can be recorded by silicon piezoresistive pressure sensor 14, control silicon piezoresistive pressure sensor 14 reach each need fathom corresponding pressure time measure once, can realize the 0.1m that often sinks, pressure transducer triggers one-shot measurement.
This device possesses multiple use-pattern, contains much information.Transparency measuring dish frontal design is and the transparent scale size of artificial observation, shape, solid colour (diameter 30cm, white disk), and the transparent scale that can be used as artificial visually examine's seawater transparency in measuring process uses.
This device, using sunshine as light source, avoids the system complex problem that built-in secondary color light source may cause, can disposable synchro measure multiple passage water body extinction coefficient and backscattering coefficient profile.Require to observe by day, in one-shot measurement process, require that solar radiation variations is little, due to one-shot measurement process shorter (in 10min), this condition easily meets.Owing to have employed sunshine as light source, cause the degree of depth of this device measuring comparatively dark, usually can reach more than 60m, exceed the depth capacity of artificial visually examine's seawater transparency.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a hyperchannel seawater transparency measurement mechanism, is characterized in that: comprise the transparency measuring dish of sealing, optical measuring device and optical communication apparatus;
Described optical measuring device is embedded at the center of transparency measuring dish, measuring surface is positioned at transparency measuring dish front, and the communication of offering optical measuring device in transparency measuring tray bottom communications face connects hole;
Described optical communication apparatus inside is provided with communication board, and communication board is fixed by communication board set casing, communication board set casing is provided with and connects the supporting communication joint in hole with communicating; Communication joint directly inserts in communication interface, realizes optical communication;
Described transparency measuring dish inside arranges pressure transducer and charging capacitor, side arrange charging ring just, negative, the charging ring ground of charging ring;
Described optical measuring device comprises upper shell and the lower house of hollow connection; cover glass is arranged at two housings hollow part; side is contacted with upper shell by rubber cage ring, side is contacted with the optical filter of several different-wavebands by rubber cage ring; a photodiode through lower house is all set bottom each optical filter; form a passage, optical filter and the corresponding photodiode of several different-wavebands form several different passages.
2. a kind of hyperchannel seawater transparency measurement mechanism according to claim 1, be is characterized in that: be fixedly connected with by tightening screw between described upper shell and lower house.
3. a kind of hyperchannel seawater transparency measurement mechanism according to claim 1, is characterized in that: the number of described optical filter is 3-6.
4. a kind of hyperchannel seawater transparency measurement mechanism according to claim 1, is characterized in that: described transparency measuring dish front is white circle.
5. a hyperchannel seawater transparency measuring method, is characterized in that: concrete steps are as follows:
(1) with a fixing hyperchannel seawater transparency measurement mechanism of band graduated measurement rope, put into seawater by the measuring surface of optical measuring device upward, slowly sink;
(2) in sinking watching, utilize pressure transducer repeatedly to trigger optical measuring device and measure seawater transparency; Measuring method is as follows: utilize sun utilizing emitted light, be radiated in measuring surface by light path, and after being processed by cover glass and the optical filter optical filtering of several different-wavebands, directly exported the count value of radiant quantity corresponding to several different passages by silicon photoelectric diode, and count value is stored in communication board inside;
(3) when hyperchannel seawater transparency measurement mechanism sinks to measurement rope bosom, measurement mechanism is pulled out the water surface, utilizes optical communication apparatus, derive count value, according to the corresponding relation of count value and radiation value, obtain the radiation value of several different passages of the same degree of depth; By repeatedly triggering measurement, obtain the variation relation of several different passages at the radiation value of different depth, thus obtain the hyperchannel extinction coefficient profile of seawater.
6. a kind of hyperchannel seawater transparency measuring method according to claim 5, it is characterized in that: the measuring surface of described optical measuring device down, put into seawater, slow sinking, repeat step (2), (3), obtain the hyperchannel backscattering coefficient profile of seawater.
7. a kind of hyperchannel seawater transparency measuring method according to claim 5, is characterized in that: the described length measuring rope is 45-55m.
8. a kind of hyperchannel seawater transparency measuring method according to claim 5, it is characterized in that: in step (2), in sinking watching, often sink 0.1m, utilizes pressure transducer to trigger optical measuring device and measure a seawater transparency.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105004699A (en) * | 2015-07-22 | 2015-10-28 | 中国水产科学研究院淡水渔业研究中心 | Measuring instrument for measuring water transparency |
| CN107367489A (en) * | 2017-07-24 | 2017-11-21 | 中国科学院遥感与数字地球研究所 | A kind of water transparency measurement apparatus |
| CN110274894A (en) * | 2019-07-31 | 2019-09-24 | 中国科学院海洋研究所 | A kind of photoelectricity transparency meter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004699A (en) * | 2015-07-22 | 2015-10-28 | 中国水产科学研究院淡水渔业研究中心 | Measuring instrument for measuring water transparency |
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| CN107367489A (en) * | 2017-07-24 | 2017-11-21 | 中国科学院遥感与数字地球研究所 | A kind of water transparency measurement apparatus |
| CN110274894A (en) * | 2019-07-31 | 2019-09-24 | 中国科学院海洋研究所 | A kind of photoelectricity transparency meter |
| CN110274894B (en) * | 2019-07-31 | 2024-01-30 | 中国科学院海洋研究所 | Photoelectric transparency instrument |
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